A term used to describe a fan of the Korean pop group TVXQ (usually fans of all original five members of said group) when they are in a state of sadness when thinking about how the group used to be together as five. This could be triggered by events such as award ceremonies, lawsuit news, sad fanmade videos/art/fiction, anniversaries, fan wars, or news of the success/setback of other k-pop groups.
Girl 1 - "What's wrong with you?"
Girl 2 - "Sorry, I just had an emoshinki moment when listening to TVXQ's debut album. I want them to get back together so badly it hurts."